We use a sample of the airline data to detect outlier airports based on the average arrival delay in them. The techniques we apply are numeric outlier, z-score, DBSCAN and isolation forest. Outliers detected by each of these techniques are visualized on a map of US using the KNIME OSM integration.
This is a companion discussion topic for the original entry at https://kni.me/w/jP4OxhLiSQZmgFo6